MEALSU0004 — Maintain and fit oxygen masks
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What an assessment for MEALSU0004 must cover
75 assessable components: 2 elements (14 performance criteria), 6 performance evidence and 52 knowledge evidence requirements, plus 3 foundation skills. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.
Elements & performance criteria
1 Maintain oxygen mask
- 1.1Inspect oxygen mask for serviceability in accordance with standard procedures
- 1.2Test oxygen mask for serviceability in accordance with standard procedures and manufacturer’s specifications
- 1.3Report identified faults beyond own authority to rectify to supervisor and quarantine faulty oxygen mask
- 1.4Replace unserviceable parts of the oxygen mask in accordance with standards procedures while observing all relevant work health and safety (WHS) requirements, including the use of material safety data sheets (MSDS) and items of personal protective equipment (PPE)
- 1.5Test communication system components in accordance with standard procedures
- 1.6Clean oxygen mask in accordance with standard procedures
- 1.7Present oxygen mask for inspection by supervisor in accordance with standard procedures
- 1.8Complete and process maintenance documentation in accordance with standard enterprise procedures
2 Fit oxygen mask
- 2.1Explain fitting process to participant to achieve optimal fit
- 2.2Measure participant to select appropriate size oxygen mask based on available information
- 2.3Adjust components of oxygen mask to optimise fit
- 2.4Confirm integration of oxygen mask and helmet for correct function during operations
- 2.5Verify oxygen mask fit from participant and supervisory feedback
- 2.6Complete and process relevant fitting-related documentation in accordance with standard enterprise procedures
Performance evidence
- maintain at least three unserviceable oxygen masks, covering a representative range of maintenance tasks, and correctly fit oxygen masks to at least three individuals by adjusting the retention system (e.g. strap) and seals
- use applicable tools, testing and measuring equipment and maintenance documentation for the tasks above
- solder at least three oxygen mask electronic and electrical components
- safely use the oxygen test rig during testing operations
- correctly dispose of hazardous waste during parts replacement activities
- apply procedures, cleanliness requirements and safety precautions at all times and as relevant to the maintenance and fitting tasks being performed above.
Knowledge evidence
- relevant enterprise procedures and maintenance publications, including:
- equipment manufacturers’ specifications and procedures
- industry practices
- safety manuals
- maintenance schedules
- work instructions
- maintenance organisation manuals
- standing instructions
- Commonwealth, state and territory work health and safety (WHS) legislation, regulations, codes and procedures for oxygen mask maintenance
- Australian Standards for oxygen masks
- relevant Defence Aviation Safety Authority (DASA) regulations and instructions
- how to obtain and apply material safety data sheets (MSDSs)
- safety precautions relating to oxygen and the operation of the oxygen test rig
- requirements for an oxygen mask servicing facility
- oxygen in flight
- components of an oxygen mask and their function, including:
- communication system (e.g. microphone)
- delivery tube
- exo-skeleton (e.g. outer shell)
- face piece (e.g. trimming)
- retention system (e.g. strap)
- valves
- oxygen mask operation in relation to flight
- oxygen regulator operation
- physiological effects of flight
- hypoxia
- critical nature of maintaining and fitting oxygen masks
- need to regularly assess correct fitment of oxygen masks
- oxygen mask fitting procedures
- procedures for fitting oxygen masks to helmets
- G forces
- forces of ejection
- basic electrical principles
- environmental conditions that may affect oxygen equipment
- approved cleaning methods for aviation life support equipment
- handling, storage and transit procedures relating to life support equipment
- handling and storage procedures for oxygen masks
- typical faults that may affect oxygen masks, including:
- contamination
- corrosion
- cracks
- excessive wearing
- fraying
- incorrect manufacture
- intermittent communication
- leaks
- perishing
- modification requirements for oxygen masks
- oxygen mask repair procedures and limitations
- soldering techniques for mask components
- operation of testing and measuring equipment and tools used to maintain oxygen masks
- use and storage of adhesives.
Foundation skills
- Reading skills: to interpret a wide range of procedures and manuals.
- Numeracy skills: to interpret technical information.
- Writing and oral communication skills: to explain the fitting process and complete documentation.
Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.
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Questions about assessing MEALSU0004
What does an assessment tool for MEALSU0004 need to cover?
To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MEALSU0004 needs to address all 75 unit components: 2 elements with 14 performance criteria, 6 performance evidence requirements, 52 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.
How does Auditori generate an assessment tool for MEALSU0004?
Auditori pulls the current release of MEALSU0004 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.
Is the first assessment tool really free?
Yes. Every new account includes one free credit — enough to generate the complete assessment tool for MEALSU0004 — with no card and no subscription required. After that it's pay-as-you-go per unit.
Can I check my existing MEALSU0004 assessment instead of generating a new one?
Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of MEALSU0004, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.
Related units
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- MEALSU0011 — Maintain general aviation recovery devices with ballistic parachute systems
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